A referral link to Dropbox.com hidden behind a URL shortener. :/ Unfortunately, I don't have enough karma to downvote you. Hopefully someone else will oblige.
I think it should have been prominently labelled as a referral link, but in GilK's defense the URL shortener is Dropbox's own one and that's what all their referral links look like. I don't think you can visually distinguish a referral links from a file sharing link.
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